The highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
Noun
the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
Usage Examples
Appleton_layer, Appleton_layer, ppleton_layer, Appleton_layer, Aoppleton_layer, A0ppleton_layer, Alppleton_layer, Aopleton_layer, A0pleton_layer, Alpleton_layer, Apopleton_layer, Ap0pleton_layer, Aplpleton_layer, Apopleton_layer, Ap0pleton_layer, Aplpleton_layer, Apoleton_layer, Ap0leton_layer, Aplleton_layer, Appoleton_layer, App0leton_layer, Applleton_layer, Appkleton_layer, Appoleton_layer, Apppleton_layer, App:leton_layer, Appketon_layer, Appoeton_layer, Apppeton_layer, App:eton_layer, Applketon_layer, Apploeton_layer, Applpeton_layer, Appl:eton_layer, Applweton_layer, Appl3eton_layer, Appl4eton_layer, Applreton_layer, Applseton_layer, Appldeton_layer, Applwton_layer, Appl3ton_layer, Appl4ton_layer, Applrton_layer, Applston_layer, Appldton_layer, Applewton_layer, Apple3ton_layer, Apple4ton_layer, Applerton_layer, Appleston_layer, Appledton_layer, Applerton_layer, Apple5ton_layer, Apple6ton_layer, Appleyton_layer, Applegton_layer, Appleron_layer, Apple5on_layer, Apple6on_layer, Appleyon_layer, Applegon_layer, Appletron_layer, Applet5on_layer, Applet6on_layer, Appletyon_layer, Appletgon_layer, Appletion_layer, Applet9on_layer, Applet0on_layer, Appletpon_layer, Appletlon_layer, Appletin_layer, Applet9n_layer, Applet0n_layer, Appletpn_layer, Appletln_layer, Appletoin_layer, Appleto9n_layer, Appleto0n_layer, Appletopn_layer, Appletoln_layer, Appletobn_layer, Appletohn_layer, Appletojn_layer, Appletomn_layer, Appleto n_layer, Appletob_layer, Appletoh_layer, Appletoj_layer, Appletom_layer, Appleto _layer, Appletonb_layer, Appletonh_layer, Appletonj_layer, Appletonm_layer, Appleton _layer, Appleton_layer, Appletonlayer, Appleton_layer, Appleton_klayer, Appleton_olayer, Appleton_player, Appleton_:layer, Appleton_kayer, Appleton_oayer, Appleton_payer, Appleton_:ayer, Appleton_lkayer, Appleton_loayer, Appleton_lpayer, Appleton_l:ayer, Appleton_lqayer, Appleton_lwayer, Appleton_lsayer, Appleton_lzayer, Appleton_lqyer, Appleton_lwyer, Appleton_lsyer, Appleton_lzyer, Appleton_laqyer, Appleton_lawyer, Appleton_lasyer, Appleton_lazyer, Appleton_latyer, Appleton_la6yer, Appleton_la7yer, Appleton_lauyer, Appleton_lahyer, Appleton_later, Appleton_la6er, Appleton_la7er, Appleton_lauer, Appleton_laher, Appleton_layter, Appleton_lay6er, Appleton_lay7er, Appleton_layuer, Appleton_layher, Appleton_laywer, Appleton_lay3er, Appleton_lay4er, Appleton_layrer, Appleton_layser, Appleton_layder, Appleton_laywr, Appleton_lay3r, Appleton_lay4r, Appleton_layrr, Appleton_laysr, Appleton_laydr, Appleton_layewr, Appleton_laye3r, Appleton_laye4r, Appleton_layerr, Appleton_layesr, Appleton_layedr, Appleton_layeer, Appleton_laye4r, Appleton_laye5r, Appleton_layetr, Appleton_layefr, Appleton_layee, Appleton_laye4, Appleton_laye5, Appleton_layet, Appleton_layef, Appleton_layere, Appleton_layer4, Appleton_layer5, Appleton_layert, Appleton_layerf.